RT Journal Article SR Electronic T1 Advanced chronic kidney disease among UK children JF Archives of Disease in Childhood JO Arch Dis Child FD BMJ Publishing Group Ltd and Royal College of Paediatrics and Child Health SP archdischild-2021-323686 DO 10.1136/archdischild-2021-323686 A1 Plumb, Lucy A1 Magadi, Winnie A1 Casula, Anna A1 Reynolds, Ben C A1 Convery, Mairead A1 Haq, Shuman A1 Hegde, Shivaram A1 Lunn, Andrew A1 Malina, Michal A1 Morgan, Henry A1 Muorah, Mordi A1 Tyerman, Kay A1 Sinha, Manish D A1 Wallace, Dean A1 Inward, Carol A1 Marks, Stephen A1 Nitsch, Dorothea A1 Medcalf, James YR 2022 UL http://adc.bmj.com/content/early/2022/06/21/archdischild-2021-323686.abstract AB The UK Renal Registry currently collects information on UK children with kidney failure requiring long-term kidney replacement therapy (KRT), which supports disease surveillance and auditing of care and outcomes; however, data are limited on children with chronic kidney disease (CKD) not on KRT.Methods In March 2020, all UK Paediatric Nephrology centres submitted data on children aged <16 years with severely reduced kidney function as of December 2019, defined as an estimated glomerular filtration rate <30 mL/min/1.73 m2.Results In total, 1031 children had severe CKD, the majority of whom (80.7%) were on KRT. The overall prevalence was 81.2 (95% CI 76.3 to 86.3) per million of the age-related population.Conclusions The prevalence of severe CKD among UK children is largely due to a high proportion of children on long-term KRT. Expanding data capture to include children with CKD before reaching failure will provide greater understanding of the CKD burden in childhood.